Abstract:
Human body need comfort in every situation whether to work inside or out. Heat has a huge impact on human health. In Pakistan, during hot weather, the ambient air temperature rises due to which body of human feels tired and exhausted. People working outdoor in this severe environment like policemen, students, labourers which suffers badly from this heat related issues. This problem needs serious attention and a solution to overcome this issue because environment like in summer’s scorching heat issues are very often to be seen in normal day life. There are many advanced options for interior thermal comfort and they all perform well. However, there has not been much progress in terms of outdoor thermal comfort. Phase Change materials (PCM) can solve this problem because it can change its phase from solid to liquid and liquid to solid with in restricted temperature range. The wide use of PCM against heat stress for personal protection device is cooling hat and vest. PCM has the ability to store and release energy when outside temperature falls in it range. PCMs are also employed in many other industries like food, medicine, textile and also in solar energy cell. The cooling device which has PCM as a coolant is much cost effective, environment friendly and easy to use and can provide cooling for 2-3 hours with a less recharge time. If the PCM has high Latent heat and can absorb more heat than it can be used for prolong period. In this study different PCMs are explored and finally two PCMs are selected Polyethylene Glycol (PEG 600) and Glauber salt for cooling vest and cap. Their melting points comes in the range of human thermal comfort zone. Latent heat of fusion of PEG 600 and Glauber salt is 148 and 240 KJ / Kg respectively.
Page(s):
0-0
DOI:
DOI not available
Published:
Journal: Sixth International Conference on Sustainability in Process Industries (SPI) 19-20 Octover 2022 (Book of Abstracts), Volume: 0, Issue: 0, Year: 2022